Tool-mounting.



A NILSON.

TOOL MOUNTiNG.

APPLICATION FILED 1AN.15.I9I7.

Patented May14,1918.

2 SHEETS-SHEET I.

A. NILSON.

TOOL MOUNTHJG.

APPLICATION FlLED JAN. 15. m1.

E,2@,52@ Patented May 14, 1918. I

2 SHEETS-SHEET 2.

UNTTED STATES PATENT @FFTGE.

ANDREW NILSON, OF CHICAGO, ILLINOIS, ASSIGNOR T0 NILSON BROS, OF CHICAGO, ILLINOIS, A CORPORATION-OF ILLINOIS.

TOOL-MOUNTI1\TG.

Specification of Letters Patent.

Patented May 14, 1918.

Application filed January 15, 1917. Serial No. 142,422.

To all whom it may concern:

Be it known that I, ANDREW NILsoN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, "have invented a certain new and useful Improvement in Tool-Mountings, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to tool mountings and has for its object the provision of an improved structure whereby a drill or similar device may be accurately held in place for properly preparing furnaces or similar structures to receive tubes.

In my application Serial No. 143,228, filed Jan. 19, 1917, I show a furnace structure in which it is necessary to connect and mount a water carrying tube between the water legs of a boiler. In order to mount this tube properly so that it may have an accurately predetermined position, it is necessary that the holes passing through the water legs upon opposite sides of the furnace accurately register. If such accurate registration is not effected it is difficult and frequently impossible to properly al-ine the tube in order to have it securely expanded in place.

My invention concerns itself with a structure for positioning a drill so that it may with accurate measurements in such a man-, ner that holes 1n the opposite water legs of boilers may accurately register.

I will explain my invention more in detail by referring to the accompanying drawing, in which- Figure 1 is a transverse sectional view of a furnace with my improved device :in position ready for drilling;

Fig. 2 is a fragmentary top view thereof;

Fig. 3 is a perspective view showing my improved mounting structure, together with the tool in place thereon, and

Fig. 4 is a fragmentary sectional view of one of the jacks for alining the structure.

Referring more particularly to Fig. 1, a furnace 10 is shown'having the water legs 11 and 12, these water legs having respectively the walls 13, 14, 15 and 16. In order to adapt this furnace so that a battle wall or arch may be properly supported it is necessary to have a water carrying tube extend between the water legs 11 and 12. In order to do this properly it. :is necessary to drillthree holes, which .holesare accurately alined, these holes being respectively through the walls 14, 15 :and 16.. Then the tube *may project from the exterior through the walls 15 and 16 and have its extremity expanded against the opening in the wall 14. The tube may then also beexpanded to close the apertures drilled in the walls 15 and 16.

In order :to secure the accurate alinement of these holes I have provided a mounting structure, which mounting structure carries a drilling device which in this instance is shown as an electric drill 17. The lmounting structure in its preferred form comprises a suitable structure '18 upon which cross'pieces 19, 19:are mounted. Upon these cross pieces .a bar 20 is perferably fixedly secured. This bar is accurately alined in a horizontal position through the agency of the jacks .21. These jacks are shown more in detail in Fig. 4 where the top of the jack is mounted in a seat 122 and the screw threaded portion of the jack engages the flanged screw threaded shell '23. A :plate 24 is likewise interposed between the jacks and the cross pieces 19, this plate carrying the shells'23 as readily apparent from the illustration. The plate 20 carries a vertical shelf 25 on the upper surface of which a roller 26 carried by the framework of .the drill rolls. The plate 20 also carries a .track 27. This track is preferably U-shaped as shown. The framework of the drill likewise has mounted'thereon a pair of rails 28,

which rails are equidistant from the axial line of the drilling tool 29. These rails are securely mounted to the framework of the drill 17, being thus symmetrical with respect to the drilling tool 29. Thus whether the drill :is turned over through .an angle of 180 so that the drill tool points toward the left, this drilling tool is always in the same straight line. Under these conditions holes can be drilled in the opposite walls 14,

the art that my improved tool mounting permits me to accurately aline holes for the reception of a tube. Changes may of course be made in the structure and arrangement and the invention applied to a multitude of uses within the scope of the appended claims. 7

Having however thus described one form which my invention may take, what I claim as new and desire to secure by Letters Patent is:

1. In a structure of the character described the combination wi'th an operating tool and its framework, of a support for said tool framework upon which said tool framework is adapted for motion to and fro, a guide upon said support, and means carried by said tool framework symmetrically arranged with respect to the axis of said operating tool adapted interchangeably to engage said guide whereby said tool and framework may be accurately alined to operate in opposite directions.

2. In a structure of the character described the combination wi'th an operating tool and its framework, of a support for said tool framework upon which said tool frameworkis adapted for motion to and fro, a guide upon said support, and a pair of rails carried by said tool framework symmetrically arranged with respect to the axis of said operating tool adapted interchangeably to engage said guide whereby said tool and framework may be accurately alined to operate in opposite directions.

3. In a structure of the character described the combination withan operating tool and its framework, of a support for said tool framework upon which said tool framework is adapted for motion to and fro, a guide upon said support, and means carried by said tool framework symmetrically arranged with respect to the axis of said operatin tool adapted interchangeably to engage sai guide whereby said. tool and framework may be accurately alined to operate in opposite directions, and means for leveling said support. 4. In a structure of the character de scribed the combination with an operating tool and its framework, of a support for said tool framework upon which said tool framework is adapted for motion to and fro, a guide upon said support, a pair of rails carried by said tool framework symmetrically arranged with respect to the axis of said operating tool adapted interchangeably to engage said guide whereby said tool and framework may be accurately alined to operate in opposite directions, and means for. leveling said support.

Copies of this patent may be obtained for 5. In a structure of the character described the combination wi'th an operating tool and its framework, of a support for said tool framework upon which said tool framework is adapted for motion to and fro, a guide upon said support, means carried by said tool framework symmetrically arranged with respect to the axis of said operatin tool adapted interchangeably to engage sai guide whereby said tool and framework may be accurately alined to operate in opposite directions, means for leveling said support, a shelf carried by said support, and a roller cooperating with said shelf carried by said tool framework.

' 6. In a structure of the character described the combination with an operating tool and its framework, of a support for said tool framework upon which said tool framework is adapted for motion to and fro, a guide upon said support, a pair of rails carried by said tool framework symmetrically arranged with respect to the axis of said operating tool adapted interchangeably to engage said guide whereby said tool and framework may be accurately alined to operate in opposite directions, means for leveling said support, a shelf carried by said support, and a roller cooperating with said shelf carried by said tool framework.

7. In a structure of the character described the combination with an operating tool and its framework, said tool andits framework being adapted for operation upon work in opposite directions, of a support for said too-l framework onwhich said tool framework is adapted for motion to and fro both in agiven direction and inthe reverse direction, and guide means interposed between said framework and said support whereby said tool and framework are accurately alinedto operate in opposite directions. Y

8. In a structure of the character described the combination with an operating tool and its framework, of a support for said tool framework upon which said tool framework is adapted for motion to and fro, a guide upon said support, and means carried by said tool framework adapted alternately to engage said guide whereby said tool and framework may be accurately alined to operate in opposite directions.

In witness whereof, I hereunto subscribe my name this 16th day of December, A. D. 1916.

ANDREW NILSON.

v Witnesses:

HAZEL A. J ONES, MAX W. ZABEL.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. 1 

